Data Science Pr

#0. INTRODUCTION The aim of this project is to construct a model to compute prime pure. The provided data contain 60000 observation. One way to compute prime pure is using the formula: \[ P_{pure}=E[N].E[Y] \] In this formula,E[N] is claims frequency and E[Y] is average cost of individual claims. However, the provided data doesn’t provide like claim frequency. So we will use this model \[ P_{pure}=P[Y>0]E[Y|Y>0,X] \] # 1. DATA MANAGEMENT ## Data Description ### DATASET

folder <- "D://ISFA//M2//Data Science"
training <- read.csv("D://ISFA//M2//Data Science//dataTrain_11.csv")
testing <- read.csv("D://ISFA//M2//Data Science//test.csv")

VARIABLE - AGEGROUP

paste("The Interquartile range is", IQR(training$age))
## [1] "The Interquartile range is 22"
quantile(training$age)
##   0%  25%  50%  75% 100% 
##   18   30   40   52  144
paste("Remove all observations whose age is above", 52 + 22*1.5)
## [1] "Remove all observations whose age is above 85"
training <- training %>% filter(age <= 85) 

# Creating AgeGroup variable based on quartiles
training <- training %>%
  mutate(AgeGroup = case_when(
    age >= 18 & age < 30 ~ 1,
    age >= 30 & age < 40 ~ 2,
    age >= 40 & age < 52 ~ 3,
    age >= 52 ~ 4
  ))
N <- nrow(training)
paste("There are", N, "observations in our training set")
## [1] "There are 58036 observations in our training set"

VARIABLE FOR CLAIM

We create a new binary variable claimBin, which is 0 if no claim was present for the individual (claimValue = 0) and is 1 if claims were made (claimValue > 0).

training <- training %>% 
  mutate(claimBin = as.factor(case_when(
    claimValue == 0 ~ 0,
    claimValue > 0 ~ 1
  )))
head(training)
##   id gender carType carCategory    occupation age carGroup bonus carValue
## 1  1   Male       C       Large      Employed  31       11   -30     3595
## 2  2   Male       A       Large      Employed  27       14   -50    17695
## 3  3   Male       A      Medium       Retired  71       13   -30     9820
## 4  4   Male       C       Large     Housewife  26        7   -50    11165
## 5  5   Male       D       Large Self-employed  45       13   -10    25485
## 6  6 Female       D      Medium      Employed  34       10   100    26685
##   material subRegion region cityDensity exposure claimNumber claimValue
## 1        0       Q34      Q   212.42471      365           0          0
## 2        1       L43      L    73.26207      264           0          0
## 3        0       R27      R   250.84133      365           0          0
## 4        1        R6      R   236.39938      365           0          0
## 5        0       P14      P    30.62119      365           0          0
## 6        0      L134      L    49.53391      365           0          0
##   AgeGroup claimBin
## 1        2        0
## 2        1        0
## 3        4        0
## 4        1        0
## 5        3        0
## 6        2        0

##Graphical Analysis ### BOXPLOT

b1 = ggplot(data = training) +
  aes(x = claimValue)  +
  geom_boxplot(color = "darkred") 

b2 = ggplot(data = training) +
  aes(x = claimNumber)  +
  geom_boxplot(color = "darkred")

b1/(b2+b1)

From the boxplot above, it can be seen that out of 60,000 observations, the number of policies with claim value and claim number equal to 0 is very high.

HISTOGRAM

quantile(training$claimValue)
##       0%      25%      50%      75%     100% 
##     0.00     0.00     0.00     0.00 69068.03
table(training$claimNumber)
## 
##     0     1     2     3     4     5     6     7     8 
## 48923  7593  1201   247    44    15     9     3     1

Up to 75% of policies received a claim value of 0 and there were 50,602 policies out of a total of 60,000 observed policies that received no claims.

The histogram below shows that the claim value and claim number that need to be claimed is not much compared to the number that does not have to be claimed

training %>% 
  mutate(claimV_positive = case_when(claimValue == 0 ~ "true",
                                    claimValue != 0 ~ "false")) %>% 
  ggplot( aes(x = claimV_positive) )+
  geom_bar(fill = "#112446")

ggplot(training) +
  theme_minimal()

training %>% 
  mutate(claimN_positive = case_when(claimNumber == 0 ~ "true",
                                     claimNumber != 0 ~ "false")) %>% 
  ggplot( aes(x = claimN_positive) )+
  geom_bar(fill = "#112446")

ggplot(training) +
  theme_minimal()

##Choosing Variables ### CORRELATION The figure below shows the correlation between quantitative variables in the data

training %>% 
  select_if(is.numeric) %>% 
  select(-c(material,id)) %>% 
  cor() %>% 
  ggcorrplot( hc.order = TRUE, type = "lower", outline.col = "gray",
              colors = c("red", "white", "blue"))

ANOVA

anovaclaim <- aov((as.numeric(claimBin) - 1) ~ ., data = training)
summary(anovaclaim)
##                Df Sum Sq Mean Sq   F value Pr(>F)    
## id              1      0       0 6.314e+00  0.012 *  
## gender          1     10      10 3.716e+02 <2e-16 ***
## carType         5      6       1 4.438e+01 <2e-16 ***
## carCategory     2     31      16 5.973e+02 <2e-16 ***
## occupation      4    108      27 1.033e+03 <2e-16 ***
## age             1    125     125 4.789e+03 <2e-16 ***
## carGroup        1     75      75 2.872e+03 <2e-16 ***
## bonus           1    257     257 9.841e+03 <2e-16 ***
## carValue        1      0       0 4.350e-01  0.510    
## material        1      6       6 2.264e+02 <2e-16 ***
## subRegion     470    214       0 1.743e+01 <2e-16 ***
## exposure        1     33      33 1.280e+03 <2e-16 ***
## claimNumber     1   5304    5304 2.033e+05 <2e-16 ***
## claimValue      1      5       5 1.969e+02 <2e-16 ***
## AgeGroup        1      0       0 3.000e-03  0.960    
## Residuals   57543   1501       0                     
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1

Remove carValue. We also remove carCategory. In the reality, claim value associate more with type and value of car than the size of car.

#2. P[Y>0]

#Import data
data_train<-training
set.seed(6)
##    id gender carType carCategory    occupation age carGroup bonus carValue
## 1:  1   Male       C       Large      Employed  31       11   -30     3595
## 2:  2   Male       A       Large      Employed  27       14   -50    17695
## 3:  3   Male       A      Medium       Retired  71       13   -30     9820
## 4:  4   Male       C       Large     Housewife  26        7   -50    11165
## 5:  5   Male       D       Large Self-employed  45       13   -10    25485
## 6:  6 Female       D      Medium      Employed  34       10   100    26685
##    material subRegion region cityDensity exposure claimNumber claimValue
## 1:        0       Q34      Q   212.42471      365           0          0
## 2:        1       L43      L    73.26207      264           0          0
## 3:        0       R27      R   250.84133      365           0          0
## 4:        1        R6      R   236.39938      365           0          0
## 5:        0       P14      P    30.62119      365           0          0
## 6:        0      L134      L    49.53391      365           0          0
##    AgeGroup claimBin Employ_situation
## 1:        2        0          Working
## 2:        1        0          Working
## 3:        4        0          Jobless
## 4:        1        0          Jobless
## 5:        3        0          Working
## 6:        2        0          Working

split data

set.seed(6)
split.ratio<-0.8
data_used2<-data_used2[, split := sample(c("train", "test"), size = nrow(data_used2), 
                                      replace = TRUE, 
                                      prob = c(split.ratio, 1 - split.ratio))]
data_train_with_split<-data_used2[data_used2$split=="train",]
data_test_with_split<-data_used2[data_used2$split=="test",]
data_train_final<-data_train_with_split[,1:(ncol(data_train_with_split)-1)]
data_test_final<-data_test_with_split[,1:(ncol(data_train_with_split)-1)]

MODELS FOR PROBABILITY OF CLAIM

claimBin <- as.numeric(data_used2$claimBin) - 1
N <- nrow(data_used2)

GRAPHIC

ggplot(data_used2) +
  aes(x = claimBin) +
  geom_bar() +
  labs(title = "Histogram for Claim") +
  theme_minimal()

# Count
paste("Number of individual with claim is", sum(claimBin))
## [1] "Number of individual with claim is 9102"
paste("Number of individual with no claim is", N - sum(claimBin))
## [1] "Number of individual with no claim is 48934"

With that, we can have a formula to represent the dependent and independent variables for the construction of our models.

claimFormula <- as.formula("claimBin ~ gender + carType + Employ_situation + material + region + cityDensity + AgeGroup")

LOGIT MODEL

logit.fit <- glm(claimFormula, data = data_train_final, family = binomial(link = "logit"))
summary(logit.fit)
## 
## Call:
## glm(formula = claimFormula, family = binomial(link = "logit"), 
##     data = data_train_final)
## 
## Deviance Residuals: 
##     Min       1Q   Median       3Q      Max  
## -1.1705  -0.6320  -0.4956  -0.3738   2.5633  
## 
## Coefficients:
##                           Estimate Std. Error z value Pr(>|z|)    
## (Intercept)             -1.3429145  0.0593667 -22.621  < 2e-16 ***
## genderMale               0.2867108  0.0278098  10.310  < 2e-16 ***
## carTypeB                 0.0838360  0.0377804   2.219 0.026485 *  
## carTypeC                 0.0924192  0.0435626   2.122 0.033877 *  
## carTypeD                 0.1135912  0.0390217   2.911 0.003603 ** 
## carTypeE                 0.1888923  0.0455617   4.146 3.39e-05 ***
## carTypeF                 0.2748423  0.0583068   4.714 2.43e-06 ***
## Employ_situationWorking -0.0984115  0.0267044  -3.685 0.000229 ***
## material                -0.1224025  0.0269336  -4.545 5.50e-06 ***
## regionM                  0.1098562  0.0653542   1.681 0.092776 .  
## regionN                  0.1860055  0.0629230   2.956 0.003116 ** 
## regionO                  0.0408078  0.0722498   0.565 0.572199    
## regionP                  0.0220216  0.0724373   0.304 0.761121    
## regionQ                 -0.2166121  0.0572564  -3.783 0.000155 ***
## regionR                 -0.4489922  0.0925910  -4.849 1.24e-06 ***
## regionS                  0.0448938  0.0734725   0.611 0.541181    
## regionT                  0.0995988  0.0712766   1.397 0.162306    
## regionU                 -0.1375547  0.0676210  -2.034 0.041931 *  
## cityDensity              0.0054124  0.0004416  12.257  < 2e-16 ***
## AgeGroup                -0.4641030  0.0129213 -35.918  < 2e-16 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## (Dispersion parameter for binomial family taken to be 1)
## 
##     Null deviance: 40320  on 46328  degrees of freedom
## Residual deviance: 38133  on 46309  degrees of freedom
## AIC: 38173
## 
## Number of Fisher Scoring iterations: 5
# Prediction of Probability of Claim
claimLogit <- as.numeric(predict(logit.fit, newdata = data_test_final, type = "response"))

We decided to use the Sample Proportion as the threshold between “Claim” and “No Claim” for our confusion matrices.

sampleProp <- sum(as.numeric(data_test_final$claimBin) - 1)/nrow(data_test_final)
sampleProp
## [1] 0.1550354
# Confusion Matrix
logit.pred <- factor(claimLogit > sampleProp, 
                     levels = c(FALSE, TRUE), 
                     labels = c(0, 1))
confusionMatrix(data = logit.pred,
                reference = as.factor(data_test_final$claimBin))
## Confusion Matrix and Statistics
## 
##           Reference
## Prediction    0    1
##          0 5932  681
##          1 3960 1134
##                                           
##                Accuracy : 0.6036          
##                  95% CI : (0.5946, 0.6124)
##     No Information Rate : 0.845           
##     P-Value [Acc > NIR] : 1               
##                                           
##                   Kappa : 0.1292          
##                                           
##  Mcnemar's Test P-Value : <2e-16          
##                                           
##             Sensitivity : 0.5997          
##             Specificity : 0.6248          
##          Pos Pred Value : 0.8970          
##          Neg Pred Value : 0.2226          
##              Prevalence : 0.8450          
##          Detection Rate : 0.5067          
##    Detection Prevalence : 0.5649          
##       Balanced Accuracy : 0.6122          
##                                           
##        'Positive' Class : 0               
## 

PROBIT MODEL

probit.fit <- glm(claimFormula, data = data_train_final, family = binomial(link = "probit"))
summary(probit.fit)
## 
## Call:
## glm(formula = claimFormula, family = binomial(link = "probit"), 
##     data = data_train_final)
## 
## Deviance Residuals: 
##     Min       1Q   Median       3Q      Max  
## -1.1207  -0.6371  -0.5012  -0.3698   2.6090  
## 
## Coefficients:
##                           Estimate Std. Error z value Pr(>|z|)    
## (Intercept)             -0.8190410  0.0328878 -24.904  < 2e-16 ***
## genderMale               0.1504772  0.0152278   9.882  < 2e-16 ***
## carTypeB                 0.0466778  0.0207370   2.251 0.024389 *  
## carTypeC                 0.0486848  0.0239631   2.032 0.042188 *  
## carTypeD                 0.0611087  0.0214747   2.846 0.004433 ** 
## carTypeE                 0.1035350  0.0252862   4.095 4.23e-05 ***
## carTypeF                 0.1491742  0.0326527   4.569 4.91e-06 ***
## Employ_situationWorking -0.0491766  0.0147676  -3.330 0.000868 ***
## material                -0.0670586  0.0148098  -4.528 5.95e-06 ***
## regionM                  0.0598652  0.0365195   1.639 0.101157    
## regionN                  0.0993010  0.0349121   2.844 0.004451 ** 
## regionO                  0.0213320  0.0384673   0.555 0.579203    
## regionP                  0.0151380  0.0385102   0.393 0.694252    
## regionQ                 -0.1251275  0.0313686  -3.989 6.64e-05 ***
## regionR                 -0.2537274  0.0515014  -4.927 8.37e-07 ***
## regionS                  0.0247838  0.0390900   0.634 0.526067    
## regionT                  0.0513314  0.0381526   1.345 0.178488    
## regionU                 -0.0755241  0.0365118  -2.068 0.038594 *  
## cityDensity              0.0030105  0.0002463  12.221  < 2e-16 ***
## AgeGroup                -0.2497143  0.0069943 -35.703  < 2e-16 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## (Dispersion parameter for binomial family taken to be 1)
## 
##     Null deviance: 40320  on 46328  degrees of freedom
## Residual deviance: 38168  on 46309  degrees of freedom
## AIC: 38208
## 
## Number of Fisher Scoring iterations: 4
# Prediction of Probability of Claim
claimProbit <- predict(probit.fit, newdata = data_test_final, type = "response")
# Confusion Matrix
probit.pred <- factor(claimProbit > sampleProp, 
                     levels = c(FALSE, TRUE), 
                     labels = c(0, 1))
confusionMatrix(data = probit.pred,
                reference = as.factor(data_test_final$claimBin))
## Confusion Matrix and Statistics
## 
##           Reference
## Prediction    0    1
##          0 5805  658
##          1 4087 1157
##                                           
##                Accuracy : 0.5947          
##                  95% CI : (0.5857, 0.6036)
##     No Information Rate : 0.845           
##     P-Value [Acc > NIR] : 1               
##                                           
##                   Kappa : 0.1266          
##                                           
##  Mcnemar's Test P-Value : <2e-16          
##                                           
##             Sensitivity : 0.5868          
##             Specificity : 0.6375          
##          Pos Pred Value : 0.8982          
##          Neg Pred Value : 0.2206          
##              Prevalence : 0.8450          
##          Detection Rate : 0.4959          
##    Detection Prevalence : 0.5521          
##       Balanced Accuracy : 0.6122          
##                                           
##        'Positive' Class : 0               
## 

CART

library(rpart)
# Grow tree
cart.fit <- rpart(claimFormula,
   method="class", 
   data=data_train_final,
   control =rpart.control(minsplit = 10, cp=0.0005))

cart.fit
## n= 46329 
## 
## node), split, n, loss, yval, (yprob)
##       * denotes terminal node
## 
##    1) root 46329 7287 0 (0.8427119 0.1572881)  
##      2) AgeGroup>=1.5 34879 4180 0 (0.8801571 0.1198429) *
##      3) AgeGroup< 1.5 11450 3107 0 (0.7286463 0.2713537)  
##        6) cityDensity< 140.7238 7567 1744 0 (0.7695256 0.2304744) *
##        7) cityDensity>=140.7238 3883 1363 0 (0.6489827 0.3510173)  
##         14) gender=Female 1628  459 0 (0.7180590 0.2819410) *
##         15) gender=Male 2255  904 0 (0.5991131 0.4008869)  
##           30) cityDensity< 221.9608 1281  471 0 (0.6323185 0.3676815)  
##             60) region=Q,R 991  330 0 (0.6670030 0.3329970)  
##              120) carType=A,B,C,D,E 931  299 0 (0.6788400 0.3211600) *
##              121) carType=F 60   29 1 (0.4833333 0.5166667)  
##                242) cityDensity< 208.7416 46   20 0 (0.5652174 0.4347826) *
##                243) cityDensity>=208.7416 14    3 1 (0.2142857 0.7857143) *
##             61) region=M 290  141 0 (0.5137931 0.4862069)  
##              122) carType=A 96   33 0 (0.6562500 0.3437500) *
##              123) carType=B,C,D,E,F 194   86 1 (0.4432990 0.5567010)  
##                246) cityDensity< 170.5884 97   47 0 (0.5154639 0.4845361)  
##                  492) carType=B,C,D,E 91   42 0 (0.5384615 0.4615385)  
##                    984) Employ_situation=Working 54   20 0 (0.6296296 0.3703704) *
##                    985) Employ_situation=Jobless 37   15 1 (0.4054054 0.5945946) *
##                  493) carType=F 6    1 1 (0.1666667 0.8333333) *
##                247) cityDensity>=170.5884 97   36 1 (0.3711340 0.6288660) *
##           31) cityDensity>=221.9608 974  433 0 (0.5554415 0.4445585)  
##             62) cityDensity>=296.1145 41   10 0 (0.7560976 0.2439024) *
##             63) cityDensity< 296.1145 933  423 0 (0.5466238 0.4533762)  
##              126) cityDensity< 251.1371 454  190 0 (0.5814978 0.4185022) *
##              127) cityDensity>=251.1371 479  233 0 (0.5135699 0.4864301)  
##                254) cityDensity>=274.0297 278  120 0 (0.5683453 0.4316547)  
##                  508) cityDensity< 287.8772 197   75 0 (0.6192893 0.3807107) *
##                  509) cityDensity>=287.8772 81   36 1 (0.4444444 0.5555556)  
##                   1018) carType=C,E 21    8 0 (0.6190476 0.3809524) *
##                   1019) carType=A,B,D,F 60   23 1 (0.3833333 0.6166667) *
##                255) cityDensity< 274.0297 201   88 1 (0.4378109 0.5621891)  
##                  510) carType=F 11    2 0 (0.8181818 0.1818182) *
##                  511) carType=A,B,C,D,E 190   79 1 (0.4157895 0.5842105) *
# Plot tree
plot(cart.fit, uniform=TRUE,
   main="Classification Tree for Claim")
text(cart.fit, use.n=TRUE, all=TRUE, cex=.8)

# Predict with tree
claimCart <- predict(cart.fit, data_test_final, type = "prob")
# Confusion Matrix
cart.pred <- factor(claimCart[,2] > sampleProp, 
                     levels = c(FALSE, TRUE), 
                     labels = c(0, 1))
confusionMatrix(data = cart.pred,
                reference = as.factor(data_test_final$claimBin))
## Confusion Matrix and Statistics
## 
##           Reference
## Prediction    0    1
##          0 7805 1023
##          1 2087  792
##                                           
##                Accuracy : 0.7343          
##                  95% CI : (0.7262, 0.7423)
##     No Information Rate : 0.845           
##     P-Value [Acc > NIR] : 1               
##                                           
##                   Kappa : 0.1819          
##                                           
##  Mcnemar's Test P-Value : <2e-16          
##                                           
##             Sensitivity : 0.7890          
##             Specificity : 0.4364          
##          Pos Pred Value : 0.8841          
##          Neg Pred Value : 0.2751          
##              Prevalence : 0.8450          
##          Detection Rate : 0.6667          
##    Detection Prevalence : 0.7541          
##       Balanced Accuracy : 0.6127          
##                                           
##        'Positive' Class : 0               
## 

RANDOM FOREST

library(randomForest)
# Building the forest
rf.fit <- randomForest(claimFormula, 
                       data = data_train_final,
                       importance = TRUE,
                       mode = "classification")
rf.fit
## 
## Call:
##  randomForest(formula = claimFormula, data = data_train_final,      importance = TRUE, mode = "classification") 
##                Type of random forest: classification
##                      Number of trees: 500
## No. of variables tried at each split: 2
## 
##         OOB estimate of  error rate: 15.71%
## Confusion matrix:
##       0  1  class.error
## 0 39038  4 0.0001024538
## 1  7272 15 0.9979415397
claimRf <- predict(rf.fit, data_test_final, type = "prob")
# Confusion Matrix
rf.pred <- factor(claimRf[,2] > sampleProp, 
                     levels = c(FALSE, TRUE), 
                     labels = c(0, 1))
confusionMatrix(data = rf.pred,
                reference = as.factor(data_test_final$claimBin))
## Confusion Matrix and Statistics
## 
##           Reference
## Prediction    0    1
##          0 9705 1683
##          1  187  132
##                                           
##                Accuracy : 0.8403          
##                  95% CI : (0.8335, 0.8469)
##     No Information Rate : 0.845           
##     P-Value [Acc > NIR] : 0.9214          
##                                           
##                   Kappa : 0.0811          
##                                           
##  Mcnemar's Test P-Value : <2e-16          
##                                           
##             Sensitivity : 0.98110         
##             Specificity : 0.07273         
##          Pos Pred Value : 0.85221         
##          Neg Pred Value : 0.41379         
##              Prevalence : 0.84496         
##          Detection Rate : 0.82899         
##    Detection Prevalence : 0.97275         
##       Balanced Accuracy : 0.52691         
##                                           
##        'Positive' Class : 0               
## 

XGBOOST

library(xgboost)
library(e1071)
# Independent variables for train
xg.mat.indep.tr <- data.matrix(data_train_final[,c(1,2,3,5,7,9,10)])
xg.mat.dep.tr <- data.matrix(data_train_final[,4]) - 1

xg.mat.indep.vl <- data.matrix(data_test_final[,c(1,2,3,5,7,9,10)])
xg.mat.dep.vl <- data.matrix(data_test_final[,4]) - 1

# Convert to XGMatrix
xg.mat.tr <- xgb.DMatrix(data = xg.mat.indep.tr,
                         label = xg.mat.dep.tr)
xg.mat.vl <- xgb.DMatrix(data = xg.mat.indep.vl,
                         label = xg.mat.dep.vl)
# Confusion Matrix
claimXg <- claimXg[seq(2,length(claimXg),2)]
xg.pred <- factor(claimXg > sampleProp, 
                     levels = c(FALSE, TRUE), 
                     labels = c(0, 1))
confusionMatrix(data = xg.pred,
                reference = as.factor(data_test_final$claimBin))
## Confusion Matrix and Statistics
## 
##           Reference
## Prediction    0    1
##          0 7954 1296
##          1 1938  519
##                                           
##                Accuracy : 0.7238          
##                  95% CI : (0.7156, 0.7318)
##     No Information Rate : 0.845           
##     P-Value [Acc > NIR] : 1               
##                                           
##                   Kappa : 0.0787          
##                                           
##  Mcnemar's Test P-Value : <2e-16          
##                                           
##             Sensitivity : 0.8041          
##             Specificity : 0.2860          
##          Pos Pred Value : 0.8599          
##          Neg Pred Value : 0.2112          
##              Prevalence : 0.8450          
##          Detection Rate : 0.6794          
##    Detection Prevalence : 0.7901          
##       Balanced Accuracy : 0.5450          
##                                           
##        'Positive' Class : 0               
## 

ROC AUC

library(pROC)
## Type 'citation("pROC")' for a citation.
## 
## Attachement du package : 'pROC'
## Les objets suivants sont masqués depuis 'package:stats':
## 
##     cov, smooth, var

For Logit Model

rocLogit <- roc(data_test_final$claimBin, claimLogit)
## Setting levels: control = 0, case = 1
## Setting direction: controls < cases
auc(rocLogit)
## Area under the curve: 0.663

For Probit Model

rocProbit <- roc(data_test_final$claimBin, claimProbit)
## Setting levels: control = 0, case = 1
## Setting direction: controls < cases
auc(rocProbit)
## Area under the curve: 0.6628

For CART

rocCart <- roc(data_test_final$claimBin, claimCart[,2])
## Setting levels: control = 0, case = 1
## Setting direction: controls < cases
auc(rocCart)
## Area under the curve: 0.6186

For Random Forest

rocRf <- roc(data_test_final$claimBin, claimRf[,2])
## Setting levels: control = 0, case = 1
## Setting direction: controls < cases
auc(rocRf)
## Area under the curve: 0.605

For XGBoost

rocXg <- roc(data_test_final$claimBin, claimXg)
## Setting levels: control = 0, case = 1
## Setting direction: controls < cases
auc(rocXg)
## Area under the curve: 0.5737

We tabulate our results

data.frame(Model = c("Logit", "Probit", "CART", "RF", "XGBoost"),
           Accuracy = c(0.6036, 0.5947, 0.7343, 0.8403, 0.7238),
           ROCAUC = c(0.6630, 0.6628, 0.6186, 0.6050, 0.5737))
##     Model Accuracy ROCAUC
## 1   Logit   0.6036 0.6630
## 2  Probit   0.5947 0.6628
## 3    CART   0.7343 0.6186
## 4      RF   0.8403 0.6050
## 5 XGBoost   0.7238 0.5737

We decided to choose Random Forest model for our Probability of Claim. However, since there should be some observations with probability 0, we will automatically treat this as having a 0.0001 so that Pure Premium is not 0.

# claimRf.test <- predict(rf.fit, [...], type = "prob")
# claimRf.test[< 0.0001] <- 0.0001
# mutate them cot nay vao data test

#3.E[Y|Y>0,X=X] This part count only the datas have claimValue >0 so we will have different data management compared to the last part

#Read data and data management
#E(Y│Y>0,X=x)
##Data management
###Loai tren 85
data_used<-data_train[data_train$age<=85,]
data_used_regression2<-data_used[data_used$claimValue>0,]


###Phan lai nhom tuoi

data_used_regression2<-data.table(data_used_regression2)

#Occupation distint
head(data_used_regression2[,Employ_situation:= as.factor(ifelse(occupation == "Employed"|occupation == "Self-employed","Working", "Jobless"))])
##    id gender carType carCategory    occupation age carGroup bonus carValue
## 1:  9 Female       C      Medium      Employed  33        8   -50     6395
## 2: 11 Female       A       Large     Housewife  44       13    50   126235
## 3: 13   Male       C      Medium      Employed  38       16   100    14490
## 4: 21 Female       A       Small      Employed  31       18   100     6255
## 5: 32 Female       A       Large Self-employed  64       19   -50    46225
## 6: 33   Male       A       Small     Housewife  33        9    40    10585
##    material subRegion region cityDensity exposure claimNumber claimValue
## 1:        0       O34      O    33.76302      246           1  559.26566
## 2:        0       Q41      Q   213.25565      365           1  898.49461
## 3:        1       R25      R   270.87401      365           1   87.79707
## 4:        0        L1      L    48.33069      215           1  790.83635
## 5:        1       R24      R   225.14174      365           1  808.28032
## 6:        1       Q24      Q   222.73537      365           1 1066.50283
##    AgeGroup claimBin Employ_situation
## 1:        2        1          Working
## 2:        3        1          Jobless
## 3:        2        1          Working
## 4:        2        1          Working
## 5:        4        1          Working
## 6:        2        1          Jobless
#Chosing variable
 #                 "gender",
 #                 "carType",
  #                "Employ_situation",
  #                "AgeGroup",
   #               "material",
    #              "region",
    #             "cityDensity"

data_used_regression2<-data_used_regression2[,c(2,3,19,17,10,12,13,16)]
data_used_regression2$material<-as.factor(data_used_regression2$material)
head(data_used_regression2)
##    gender carType Employ_situation AgeGroup material region cityDensity
## 1: Female       C          Working        2        0      O    33.76302
## 2: Female       A          Jobless        3        0      Q   213.25565
## 3:   Male       C          Working        2        1      R   270.87401
## 4: Female       A          Working        2        0      L    48.33069
## 5: Female       A          Working        4        1      R   225.14174
## 6:   Male       A          Jobless        2        1      Q   222.73537
##    claimValue
## 1:  559.26566
## 2:  898.49461
## 3:   87.79707
## 4:  790.83635
## 5:  808.28032
## 6: 1066.50283

We split the data into 2 part

split.ratio<-0.8
data_used_regression2<-data_used_regression2[, split := sample(c("train", "test"), size = nrow(data_used_regression2), 
                                      replace = TRUE, 
                                      prob = c(split.ratio, 1 - split.ratio))]

#Train and test data for XGBOOST
data_train_with_split2<-data_used_regression2[data_used_regression2$split=="train",]
data_test_with_split2<-data_used_regression2[data_used_regression2$split=="test",]
#Train and test data
data_train_final2<-data_train_with_split2[,1:(ncol(data_train_with_split2)-1)]
data_test_final2<-data_test_with_split2[,1:(ncol(data_train_with_split2)-1)]

we will start with a simple model The Generalized Linear Model (GLM) for the Gamma distribution

##GLM

# Model
#Premier modele lognormal
modele_gamma<-glm(formula = data_train_final2$claimValue ~ gender+
               carType+Employ_situation+AgeGroup+material+region+cityDensity
             ,data=data_train_final2,  family = Gamma(link="log"))
summary(modele_gamma)
## 
## Call:
## glm(formula = data_train_final2$claimValue ~ gender + carType + 
##     Employ_situation + AgeGroup + material + region + cityDensity, 
##     family = Gamma(link = "log"), data = data_train_final2)
## 
## Deviance Residuals: 
##     Min       1Q   Median       3Q      Max  
## -5.1695  -1.5014  -0.8690  -0.1164   7.4341  
## 
## Coefficients:
##                           Estimate Std. Error t value Pr(>|t|)    
## (Intercept)              7.8235567  0.1129750  69.250  < 2e-16 ***
## genderMale              -0.0796038  0.0526400  -1.512  0.13052    
## carTypeB                 0.1059311  0.0722931   1.465  0.14288    
## carTypeC                 0.1203397  0.0818170   1.471  0.14138    
## carTypeD                 0.1277359  0.0737956   1.731  0.08350 .  
## carTypeE                 0.1647146  0.0857437   1.921  0.05477 .  
## carTypeF                 0.0117467  0.1072885   0.109  0.91282    
## Employ_situationWorking -0.0645130  0.0496785  -1.299  0.19412    
## AgeGroup                -0.0741224  0.0237840  -3.116  0.00184 ** 
## material1               -0.1420362  0.0513949  -2.764  0.00573 ** 
## regionM                 -0.0147859  0.1238051  -0.119  0.90494    
## regionN                  0.0891010  0.1195183   0.746  0.45599    
## regionO                  0.0286005  0.1363754   0.210  0.83389    
## regionP                 -0.1914566  0.1368395  -1.399  0.16182    
## regionQ                 -0.1112315  0.1088269  -1.022  0.30677    
## regionR                  0.0148145  0.1735129   0.085  0.93196    
## regionS                  0.0750982  0.1427812   0.526  0.59893    
## regionT                 -0.0357792  0.1382612  -0.259  0.79581    
## regionU                 -0.1005755  0.1278818  -0.786  0.43162    
## cityDensity              0.0001874  0.0008211   0.228  0.81944    
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## (Dispersion parameter for Gamma family taken to be 4.429914)
## 
##     Null deviance: 16626  on 7301  degrees of freedom
## Residual deviance: 16439  on 7282  degrees of freedom
## AIC: 123765
## 
## Number of Fisher Scoring iterations: 8
predictions_gamma <- predict(modele_gamma, data_test_final2)
rmse_gamma <- sqrt(mean((predictions_gamma  - data_test_final2$claimValue)^2))
rmse_gamma
## [1] 4969.359

As we can see the RMSE is very high, so we will try a different model ##XGBOOST ###Data management

Since XGBoost needs all the inputs to be numbers, We will have to convert the data we use into number. We will use one hot encoding to convert.If we just label encore, xgboost will wrongly interpret thefeature as having a numeric relationship

#Conversion from categorical to numeric variables using one hot encoding

ohe.features <- c("gender",
                  "carType",
                  "Employ_situation",
                  "AgeGroup",
                  "material",
                  "region",
                 "cityDensity")
ohe.string <- paste(" ~ ", paste(ohe.features, collapse=" + "), sep = "")
ohe.dummies_train <- dummyVars(ohe.string, data = data_train_final2[, ..ohe.features])
ohe.dummies_test <- dummyVars(ohe.string, data = data_test_final2[, ..ohe.features])

train_data_xgb<-predict(ohe.dummies_train, newdata = data_train_final2[, ..ohe.features]) %>% as.data.table

test_data_xgb<-predict(ohe.dummies_test, newdata = data_test_final2[, ..ohe.features]) %>% as.data.table

train_data_xgb<-cbind.data.frame(train_data_xgb,data_train_final2$claimValue)
test_data_xgb<-cbind.data.frame(test_data_xgb,data_test_final2$claimValue)

names(train_data_xgb)[ncol(train_data_xgb)] <- "claimValue"
names(test_data_xgb)[ncol(test_data_xgb)] <- "claimValue"

###Simple XGBoost We run a simple Model

dbX <- as(as.matrix(train_data_xgb[,-ncol(train_data_xgb)]),"dgCMatrix")
dbY <- as.numeric(train_data_xgb$claimValue)
dbTrain_xgb <- xgb.DMatrix(data = dbX, label = dbY)

dbZ <- as(as.matrix(test_data_xgb[,-ncol(test_data_xgb)]),"dgCMatrix")
dbK <- as.numeric(test_data_xgb$claimValue)
dbTest_xgb <- xgb.DMatrix(data = dbZ, label = dbK)

watchlist <- list(train = dbTrain_xgb, test = dbTest_xgb)

xgb.model1 <- xgb.train(data = dbTrain_xgb,
                       nround = 100,
                       max_depth = 6,
                       eta = 0.3,
                       gamma = 0,
                       min_child_weight = 1,
                       subsample = 1,
                       objective = "reg:squarederror"
)

xgb.pred1 <- predict(xgb.model1,dbTest_xgb)
RMSE(xgb.pred1,test_data_xgb$claimValue)
## [1] 5035.723
summary(xgb.model1)
##               Length Class              Mode       
## handle             1 xgb.Booster.handle externalptr
## raw           414816 -none-             raw        
## niter              1 -none-             numeric    
## call               9 -none-             call       
## params             7 -none-             list       
## callbacks          1 -none-             list       
## feature_names     24 -none-             character  
## nfeatures          1 -none-             numeric

The RMSE high. We now try to do a grid-Search to try out many different combination of hyper-parameters to see which combination gives us the best fit

grid_tune <- expand.grid(
  nrounds = c(100,200,500), #number of trees
  max_depth = c(2,4,6),
  eta = c(0.1,0.2,0.3), #c(0.025,0.05,0.1,0.3), #Learning rate
  gamma = 0,
  colsample_bytree = c(0.4), 
  min_child_weight = c(1,2,3), # c(1,2,3) # the larger, the more conservative the model
  #is; can be used as a stop
  subsample = c(0.5, 0.75, 1.0) 
)

train_control <- trainControl(method = "cv",
                              number=5,
                              verboseIter = TRUE,
                              allowParallel = TRUE)

xgb_tune <- train(x = train_data_xgb[,-ncol(train_data_xgb)],
                  y = train_data_xgb[,ncol(train_data_xgb)],
                  trControl = train_control,
                  tuneGrid = grid_tune,
                  method= "xgbTree",
                  objective = "reg:squarederror",
                  verbose = TRUE)
## + Fold1: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:19] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:19] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold1: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:20] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:20] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold1: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:20] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:20] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold1: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:21] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:21] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold1: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:22] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:22] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold1: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:23] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:23] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold1: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:24] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:24] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold1: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:25] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:25] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold1: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:25] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:25] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold1: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:27] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:27] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold1: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:28] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:28] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold1: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:30] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:30] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold1: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:31] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:31] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold1: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:33] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:33] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold1: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:34] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:34] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold1: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:35] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:35] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold1: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:37] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:37] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold1: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:38] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:38] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold1: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:41] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:41] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold1: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:43] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:43] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold1: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:45] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:45] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold1: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:48] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:48] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold1: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:50] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:50] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold1: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:53] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:53] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold1: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:55] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:55] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold1: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:33:57] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:33:57] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold1: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:00] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:00] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold1: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:01] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:01] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold1: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:01] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:01] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold1: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:02] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:02] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold1: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:03] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:03] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold1: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:04] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:04] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold1: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:05] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:05] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold1: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:06] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:06] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold1: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:06] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:06] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold1: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:07] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:07] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold1: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:09] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:09] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold1: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:10] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:10] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold1: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:11] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:11] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold1: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:13] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:13] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold1: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:14] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:14] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold1: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:16] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:16] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold1: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:17] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:17] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold1: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:19] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:19] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold1: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:20] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:20] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold1: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:23] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:23] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold1: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:25] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:25] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold1: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:27] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:27] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold1: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:30] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:30] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold1: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:32] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:32] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold1: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:35] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:35] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold1: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:37] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:37] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold1: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:40] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:40] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold1: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:42] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:42] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold1: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:43] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:43] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold1: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:44] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:44] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold1: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:44] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:44] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold1: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:45] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:45] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold1: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:46] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:46] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold1: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:47] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:47] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold1: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:48] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:48] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold1: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:49] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:49] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold1: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:49] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:49] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold1: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:51] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:51] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold1: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:52] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:52] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold1: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:54] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:54] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold1: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:55] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:55] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold1: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:56] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:56] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold1: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:58] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:58] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold1: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:34:59] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:34:59] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold1: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:01] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:01] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold1: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:02] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:02] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold1: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:05] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:05] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold1: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:07] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:07] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold1: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:09] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:09] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold1: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:12] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:12] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold1: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:14] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:14] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold1: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:17] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:17] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold1: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:19] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:19] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold1: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:22] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:22] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold1: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:24] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:24] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold1: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold2: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:25] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:25] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold2: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:26] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:26] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold2: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:26] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:26] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold2: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:27] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:27] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold2: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:28] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:28] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold2: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:29] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:29] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold2: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:30] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:30] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold2: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:31] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:31] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold2: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:31] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:31] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold2: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:33] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:33] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold2: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:34] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:34] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold2: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:36] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:36] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold2: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:37] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:37] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold2: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:39] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:39] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold2: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:40] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:40] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold2: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:41] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:41] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold2: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:43] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:43] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold2: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:44] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:44] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold2: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:47] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:47] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold2: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:49] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:49] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold2: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:51] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:51] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold2: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:54] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:54] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold2: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:57] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:57] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold2: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:35:59] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:35:59] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold2: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:02] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:02] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold2: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:04] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:04] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold2: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:07] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:07] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold2: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:08] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:08] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold2: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:09] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:09] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold2: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:09] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:09] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold2: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:10] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:10] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold2: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:11] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:11] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold2: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:12] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:12] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold2: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:13] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:13] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold2: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:14] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:14] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold2: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:15] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:15] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold2: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:16] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:16] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold2: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:18] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:18] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold2: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:19] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:19] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold2: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:20] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:20] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold2: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:22] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:22] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold2: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:23] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:23] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold2: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:25] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:25] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold2: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:26] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:26] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold2: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:28] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:28] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold2: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:30] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:30] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold2: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:33] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:33] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold2: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:35] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:35] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold2: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:37] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:37] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold2: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:40] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:40] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold2: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:42] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:42] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold2: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:45] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:45] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold2: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:47] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:47] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold2: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:49] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:49] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold2: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:50] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:50] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold2: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:51] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:51] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold2: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:52] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:52] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold2: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:53] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:53] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold2: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:54] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:54] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold2: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:54] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:54] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold2: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:55] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:55] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold2: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:56] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:56] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold2: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:57] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:57] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold2: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:36:58] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:36:58] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold2: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:00] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:00] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold2: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:01] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:01] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold2: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:02] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:02] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold2: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:04] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:04] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold2: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:05] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:05] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold2: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:07] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:07] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold2: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:08] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:08] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold2: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:10] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:10] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold2: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:12] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:12] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold2: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:15] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:15] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold2: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:17] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:17] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold2: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:19] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:19] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold2: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:22] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:22] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold2: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:24] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:24] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold2: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:27] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:27] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold2: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:29] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:29] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold2: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:31] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:31] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold2: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold3: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:32] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:32] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold3: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:33] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:33] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold3: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:34] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:34] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold3: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:35] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:35] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold3: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:36] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:36] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold3: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:36] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:37] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold3: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:37] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:37] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold3: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:38] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:38] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold3: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:39] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:39] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold3: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:40] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:40] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold3: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:42] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:42] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold3: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:43] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:43] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold3: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:45] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:45] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold3: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:46] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:46] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold3: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:48] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:48] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold3: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:49] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:49] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold3: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:51] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:51] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold3: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:52] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:52] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold3: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:54] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:54] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold3: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:57] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:57] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold3: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:37:59] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:37:59] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold3: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:02] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:02] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold3: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:04] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:04] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold3: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:06] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:06] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold3: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:09] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:09] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold3: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:11] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:11] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold3: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:13] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:13] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold3: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:14] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:14] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold3: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:15] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:15] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold3: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:16] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:16] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold3: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:17] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:17] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold3: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:18] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:18] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold3: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:18] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:18] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold3: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:19] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:19] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold3: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:20] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:20] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold3: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:21] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:21] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold3: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:22] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:22] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold3: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:24] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:24] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold3: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:25] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:25] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold3: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:27] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:27] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold3: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:28] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:28] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold3: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:29] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:29] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold3: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:31] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:31] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold3: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:32] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:32] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold3: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:34] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:34] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold3: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:36] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:36] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold3: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:39] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:39] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold3: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:41] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:41] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold3: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:44] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:44] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold3: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:46] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:46] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold3: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:48] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:48] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold3: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:51] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:51] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold3: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:53] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:53] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold3: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:55] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:55] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold3: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:56] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:56] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold3: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:57] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:57] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold3: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:58] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:58] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold3: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:38:59] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:38:59] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold3: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:00] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:00] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold3: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:00] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:00] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold3: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:01] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:01] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold3: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:02] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:02] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold3: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:03] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:03] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold3: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:04] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:04] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold3: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:06] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:06] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold3: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:07] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:07] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold3: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:09] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:09] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold3: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:10] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:10] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold3: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:11] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:11] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold3: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:13] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:13] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold3: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:14] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:14] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold3: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:16] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:16] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold3: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:18] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:18] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold3: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:21] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:21] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold3: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:23] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:23] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold3: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:25] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:25] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold3: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:28] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:28] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold3: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:30] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:30] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold3: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:33] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:33] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold3: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:35] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:35] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold3: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:37] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:37] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold3: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold4: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:38] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:38] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold4: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:39] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:39] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold4: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:40] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:40] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold4: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:41] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:41] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold4: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:42] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:42] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold4: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:42] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:42] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold4: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:43] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:43] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold4: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:44] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:44] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold4: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:45] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:45] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold4: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:46] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:46] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold4: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:48] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:48] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold4: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:49] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:49] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold4: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:51] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:51] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold4: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:52] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:52] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold4: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:54] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:54] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold4: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:55] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:55] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold4: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:56] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:56] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold4: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:39:58] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:39:58] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold4: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:00] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:00] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold4: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:03] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:03] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold4: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:05] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:05] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold4: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:07] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:07] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold4: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:10] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:10] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold4: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:12] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:12] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold4: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:15] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:15] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold4: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:17] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:17] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold4: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:19] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:19] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold4: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:20] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:20] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold4: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:21] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:21] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold4: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:22] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:22] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold4: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:23] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:23] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold4: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:23] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:23] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold4: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:24] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:24] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold4: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:25] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:25] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold4: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:26] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:26] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold4: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:27] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:27] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold4: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:28] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:28] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold4: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:30] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:30] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold4: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:31] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:31] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold4: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:32] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:32] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold4: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:34] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:34] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold4: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:35] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:35] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold4: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:37] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:37] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold4: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:38] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:38] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold4: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:39] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:39] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold4: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:42] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:42] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold4: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:44] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:44] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold4: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:47] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:47] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold4: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:49] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:49] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold4: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:52] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:52] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold4: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:54] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:54] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold4: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:57] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:57] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold4: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:40:59] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:40:59] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold4: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:01] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:01] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold4: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:02] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:02] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold4: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:03] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:03] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold4: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:04] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:04] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold4: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:05] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:05] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold4: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:05] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:05] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold4: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:06] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:06] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold4: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:07] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:07] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold4: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:08] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:08] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold4: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:09] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:09] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold4: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:10] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:10] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold4: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:12] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:12] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold4: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:13] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:13] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold4: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:14] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:14] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold4: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:16] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:16] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold4: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:17] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:17] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold4: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:19] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:19] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold4: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:20] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:20] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold4: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:21] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:21] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold4: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:24] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:24] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold4: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:26] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:26] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold4: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:29] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:29] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold4: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:31] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:31] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold4: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:34] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:34] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold4: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:36] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:36] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold4: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:38] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:38] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold4: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:41] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:41] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold4: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:43] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:43] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold4: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold5: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:44] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:44] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold5: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:45] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:45] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold5: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:45] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:45] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold5: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:46] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:46] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold5: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:47] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:47] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold5: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:48] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:48] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold5: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:49] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:49] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold5: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:50] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:50] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold5: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:50] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:50] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold5: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:52] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:52] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold5: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:53] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:53] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold5: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:55] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:55] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold5: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:56] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:56] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold5: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:58] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:58] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold5: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:41:59] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:41:59] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold5: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:01] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:01] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold5: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:02] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:02] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold5: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:03] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:03] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold5: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:06] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:06] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold5: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:08] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:08] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold5: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:11] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:11] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold5: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:13] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:13] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold5: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:16] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:16] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold5: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:18] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:18] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold5: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:20] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:20] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold5: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:23] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:23] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold5: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:25] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:25] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.1, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold5: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:26] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:26] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold5: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:27] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:27] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold5: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:27] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:27] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold5: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:28] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:28] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold5: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:29] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:29] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold5: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:30] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:30] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold5: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:31] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:31] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold5: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:32] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:32] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold5: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:32] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:32] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold5: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:34] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:34] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold5: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:35] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:35] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold5: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:37] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:37] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold5: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:38] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:38] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold5: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:40] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:40] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold5: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:41] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:41] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold5: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:42] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:42] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold5: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:44] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:44] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold5: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:45] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:45] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold5: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:48] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:48] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold5: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:50] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:50] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold5: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:52] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:52] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold5: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:55] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:55] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold5: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:42:57] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:42:57] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold5: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:00] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:00] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold5: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:02] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:02] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold5: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:05] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:05] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold5: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:07] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:07] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.2, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold5: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:08] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:08] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold5: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:09] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:09] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold5: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:09] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:09] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold5: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:10] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:10] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold5: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:11] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:11] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold5: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:12] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:12] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold5: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:13] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:13] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold5: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:14] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:14] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold5: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:14] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:14] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=2, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold5: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:16] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:16] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold5: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:17] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:17] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold5: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:19] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:19] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold5: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:20] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:20] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold5: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:21] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:21] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold5: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:23] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:23] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold5: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:24] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:24] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold5: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:26] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:26] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold5: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:27] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:27] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=4, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## + Fold5: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:30] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:30] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.50, nrounds=500 
## + Fold5: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:32] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:32] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=0.75, nrounds=500 
## + Fold5: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:34] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:34] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=1, subsample=1.00, nrounds=500 
## + Fold5: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:37] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:37] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.50, nrounds=500 
## + Fold5: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:39] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:39] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=0.75, nrounds=500 
## + Fold5: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:42] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:42] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=2, subsample=1.00, nrounds=500 
## + Fold5: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:44] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:44] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.50, nrounds=500 
## + Fold5: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:47] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:47] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=0.75, nrounds=500 
## + Fold5: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
## [23:43:49] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## [23:43:49] WARNING: amalgamation/../src/c_api/c_api.cc:785: `ntree_limit` is deprecated, use `iteration_range` instead.
## - Fold5: eta=0.3, max_depth=6, gamma=0, colsample_bytree=0.4, min_child_weight=3, subsample=1.00, nrounds=500 
## Aggregating results
## Selecting tuning parameters
## Fitting nrounds = 100, max_depth = 2, eta = 0.1, gamma = 0, colsample_bytree = 0.4, min_child_weight = 1, subsample = 1 on full training set
## Warning in check.booster.params(params, ...): The following parameters were provided multiple times:
##  objective
##   Only the last value for each of them will be used.
xgb_tune
## eXtreme Gradient Boosting 
## 
## 7302 samples
##   24 predictor
## 
## No pre-processing
## Resampling: Cross-Validated (5 fold) 
## Summary of sample sizes: 5841, 5842, 5842, 5842, 5841 
## Resampling results across tuning parameters:
## 
##   eta  max_depth  min_child_weight  subsample  nrounds  RMSE      Rsquared    
##   0.1  2          1                 0.50       100      4381.505  1.374824e-03
##   0.1  2          1                 0.50       200      4397.004  6.476787e-04
##   0.1  2          1                 0.50       500      4426.407  2.773700e-04
##   0.1  2          1                 0.75       100      4381.076  1.549471e-03
##   0.1  2          1                 0.75       200      4390.097  1.245650e-03
##   0.1  2          1                 0.75       500      4422.469  5.294791e-04
##   0.1  2          1                 1.00       100      4375.697  2.443742e-03
##   0.1  2          1                 1.00       200      4388.271  1.343041e-03
##   0.1  2          1                 1.00       500      4419.950  5.218796e-04
##   0.1  2          2                 0.50       100      4388.346  8.174715e-04
##   0.1  2          2                 0.50       200      4399.955  4.680420e-04
##   0.1  2          2                 0.50       500      4435.872  4.915641e-04
##   0.1  2          2                 0.75       100      4379.800  2.025166e-03
##   0.1  2          2                 0.75       200      4393.733  7.882954e-04
##   0.1  2          2                 0.75       500      4422.061  4.494835e-04
##   0.1  2          2                 1.00       100      4375.722  2.619692e-03
##   0.1  2          2                 1.00       200      4387.777  1.334955e-03
##   0.1  2          2                 1.00       500      4418.134  4.478668e-04
##   0.1  2          3                 0.50       100      4382.601  1.451582e-03
##   0.1  2          3                 0.50       200      4397.920  7.156296e-04
##   0.1  2          3                 0.50       500      4428.317  6.481122e-04
##   0.1  2          3                 0.75       100      4377.925  1.952087e-03
##   0.1  2          3                 0.75       200      4390.319  1.057430e-03
##   0.1  2          3                 0.75       500      4421.196  6.914774e-04
##   0.1  2          3                 1.00       100      4376.895  2.264582e-03
##   0.1  2          3                 1.00       200      4386.655  1.328831e-03
##   0.1  2          3                 1.00       500      4420.667  3.384117e-04
##   0.1  4          1                 0.50       100      4424.161  8.653572e-04
##   0.1  4          1                 0.50       200      4480.358  5.058890e-04
##   0.1  4          1                 0.50       500      4596.716  2.635078e-04
##   0.1  4          1                 0.75       100      4422.601  3.332554e-04
##   0.1  4          1                 0.75       200      4475.662  1.081310e-04
##   0.1  4          1                 0.75       500      4581.794  4.328349e-04
##   0.1  4          1                 1.00       100      4416.376  3.848559e-04
##   0.1  4          1                 1.00       200      4458.375  1.323028e-04
##   0.1  4          1                 1.00       500      4553.832  1.714453e-04
##   0.1  4          2                 0.50       100      4427.025  4.937275e-04
##   0.1  4          2                 0.50       200      4476.882  3.027901e-04
##   0.1  4          2                 0.50       500      4600.098  4.193660e-04
##   0.1  4          2                 0.75       100      4422.035  1.639298e-04
##   0.1  4          2                 0.75       200      4466.035  1.948572e-04
##   0.1  4          2                 0.75       500      4567.051  3.286612e-04
##   0.1  4          2                 1.00       100      4414.741  5.899031e-04
##   0.1  4          2                 1.00       200      4451.761  3.505086e-04
##   0.1  4          2                 1.00       500      4552.923  2.026055e-04
##   0.1  4          3                 0.50       100      4427.635  4.288559e-04
##   0.1  4          3                 0.50       200      4474.438  5.177370e-04
##   0.1  4          3                 0.50       500      4576.473  7.435758e-04
##   0.1  4          3                 0.75       100      4419.401  2.525057e-04
##   0.1  4          3                 0.75       200      4460.394  3.049454e-04
##   0.1  4          3                 0.75       500      4562.968  2.359492e-04
##   0.1  4          3                 1.00       100      4414.656  4.425964e-04
##   0.1  4          3                 1.00       200      4450.554  2.813415e-04
##   0.1  4          3                 1.00       500      4543.869  1.991924e-04
##   0.1  6          1                 0.50       100      4512.841  2.088518e-04
##   0.1  6          1                 0.50       200      4611.267  3.376906e-04
##   0.1  6          1                 0.50       500      4839.599  8.182460e-04
##   0.1  6          1                 0.75       100      4488.634  2.905396e-04
##   0.1  6          1                 0.75       200      4602.398  6.123689e-04
##   0.1  6          1                 0.75       500      4805.886  9.619774e-04
##   0.1  6          1                 1.00       100      4484.830  2.473651e-04
##   0.1  6          1                 1.00       200      4565.369  3.877288e-04
##   0.1  6          1                 1.00       500      4740.449  6.723432e-04
##   0.1  6          2                 0.50       100      4489.311  2.052182e-04
##   0.1  6          2                 0.50       200      4588.146  4.418979e-04
##   0.1  6          2                 0.50       500      4788.531  2.411465e-04
##   0.1  6          2                 0.75       100      4477.061  2.388320e-04
##   0.1  6          2                 0.75       200      4573.497  3.542309e-04
##   0.1  6          2                 0.75       500      4761.575  5.983329e-04
##   0.1  6          2                 1.00       100      4474.073  2.219441e-04
##   0.1  6          2                 1.00       200      4549.836  4.992956e-04
##   0.1  6          2                 1.00       500      4716.080  6.136063e-04
##   0.1  6          3                 0.50       100      4491.451  3.354033e-04
##   0.1  6          3                 0.50       200      4571.501  3.821102e-04
##   0.1  6          3                 0.50       500      4764.758  5.777768e-04
##   0.1  6          3                 0.75       100      4479.903  2.373590e-04
##   0.1  6          3                 0.75       200      4570.117  3.840426e-04
##   0.1  6          3                 0.75       500      4750.197  4.138975e-04
##   0.1  6          3                 1.00       100      4461.669  1.375385e-04
##   0.1  6          3                 1.00       200      4536.168  1.315631e-04
##   0.1  6          3                 1.00       500      4708.420  3.064583e-04
##   0.2  2          1                 0.50       100      4403.139  4.650957e-04
##   0.2  2          1                 0.50       200      4424.445  2.977192e-04
##   0.2  2          1                 0.50       500      4475.910  6.309765e-04
##   0.2  2          1                 0.75       100      4393.399  1.492733e-03
##   0.2  2          1                 0.75       200      4415.205  8.434659e-04
##   0.2  2          1                 0.75       500      4465.073  4.984124e-04
##   0.2  2          1                 1.00       100      4390.030  1.134925e-03
##   0.2  2          1                 1.00       200      4413.300  3.965868e-04
##   0.2  2          1                 1.00       500      4467.894  3.312005e-04
##   0.2  2          2                 0.50       100      4400.908  9.659393e-04
##   0.2  2          2                 0.50       200      4429.652  3.790634e-04
##   0.2  2          2                 0.50       500      4481.525  6.089675e-04
##   0.2  2          2                 0.75       100      4392.008  1.093614e-03
##   0.2  2          2                 0.75       200      4413.824  7.999611e-04
##   0.2  2          2                 0.75       500      4462.468  6.063127e-04
##   0.2  2          2                 1.00       100      4386.923  1.497348e-03
##   0.2  2          2                 1.00       200      4413.905  3.423411e-04
##   0.2  2          2                 1.00       500      4462.609  3.264886e-04
##   0.2  2          3                 0.50       100      4403.034  6.874876e-04
##   0.2  2          3                 0.50       200      4423.841  4.552110e-04
##   0.2  2          3                 0.50       500      4473.865  5.503982e-04
##   0.2  2          3                 0.75       100      4389.940  1.299395e-03
##   0.2  2          3                 0.75       200      4413.164  7.743252e-04
##   0.2  2          3                 0.75       500      4459.737  8.976360e-04
##   0.2  2          3                 1.00       100      4387.408  1.370318e-03
##   0.2  2          3                 1.00       200      4409.385  5.048397e-04
##   0.2  2          3                 1.00       500      4459.369  4.013924e-04
##   0.2  4          1                 0.50       100      4502.444  1.957455e-04
##   0.2  4          1                 0.50       200      4591.900  8.609906e-05
##   0.2  4          1                 0.50       500      4772.652  6.780506e-04
##   0.2  4          1                 0.75       100      4482.415  1.870850e-04
##   0.2  4          1                 0.75       200      4569.255  2.857014e-04
##   0.2  4          1                 0.75       500      4714.475  6.089895e-04
##   0.2  4          1                 1.00       100      4463.100  2.271138e-04
##   0.2  4          1                 1.00       200      4533.280  1.965866e-04
##   0.2  4          1                 1.00       500      4671.366  3.520396e-04
##   0.2  4          2                 0.50       100      4509.728  5.992237e-04
##   0.2  4          2                 0.50       200      4604.267  3.899632e-04
##   0.2  4          2                 0.50       500      4782.599  3.263491e-04
##   0.2  4          2                 0.75       100      4471.688  4.135482e-04
##   0.2  4          2                 0.75       200      4558.670  3.354498e-04
##   0.2  4          2                 0.75       500      4697.764  3.307469e-04
##   0.2  4          2                 1.00       100      4459.515  1.400295e-04
##   0.2  4          2                 1.00       200      4528.681  2.031974e-04
##   0.2  4          2                 1.00       500      4668.788  2.428076e-04
##   0.2  4          3                 0.50       100      4482.633  4.983944e-04
##   0.2  4          3                 0.50       200      4573.388  8.440147e-04
##   0.2  4          3                 0.50       500      4735.884  7.399286e-04
##   0.2  4          3                 0.75       100      4471.997  6.097253e-04
##   0.2  4          3                 0.75       200      4559.130  1.783976e-04
##   0.2  4          3                 0.75       500      4700.900  2.521437e-04
##   0.2  4          3                 1.00       100      4455.817  4.630573e-04
##   0.2  4          3                 1.00       200      4524.828  1.576098e-04
##   0.2  4          3                 1.00       500      4674.272  2.455403e-04
##   0.2  6          1                 0.50       100      4655.890  3.163891e-04
##   0.2  6          1                 0.50       200      4826.992  5.557711e-04
##   0.2  6          1                 0.50       500      5124.978  4.488945e-04
##   0.2  6          1                 0.75       100      4620.307  3.064634e-04
##   0.2  6          1                 0.75       200      4787.363  3.986085e-04
##   0.2  6          1                 0.75       500      5084.891  8.582338e-04
##   0.2  6          1                 1.00       100      4568.914  7.482686e-04
##   0.2  6          1                 1.00       200      4718.947  7.038351e-04
##   0.2  6          1                 1.00       500      4938.624  9.150700e-04
##   0.2  6          2                 0.50       100      4683.702  7.373860e-04
##   0.2  6          2                 0.50       200      4813.809  8.698287e-04
##   0.2  6          2                 0.50       500      5074.600  7.143226e-04
##   0.2  6          2                 0.75       100      4602.877  2.611693e-04
##   0.2  6          2                 0.75       200      4752.722  7.775277e-04
##   0.2  6          2                 0.75       500      5022.585  1.004693e-03
##   0.2  6          2                 1.00       100      4569.881  3.877219e-04
##   0.2  6          2                 1.00       200      4687.355  7.359013e-04
##   0.2  6          2                 1.00       500      4928.637  9.944723e-04
##   0.2  6          3                 0.50       100      4639.224  3.478010e-04
##   0.2  6          3                 0.50       200      4755.566  4.112216e-04
##   0.2  6          3                 0.50       500      5038.093  1.924944e-04
##   0.2  6          3                 0.75       100      4596.580  7.186661e-04
##   0.2  6          3                 0.75       200      4750.807  7.084885e-04
##   0.2  6          3                 0.75       500      5002.947  8.995065e-04
##   0.2  6          3                 1.00       100      4554.791  3.641760e-04
##   0.2  6          3                 1.00       200      4685.304  1.811269e-04
##   0.2  6          3                 1.00       500      4901.142  5.062928e-04
##   0.3  2          1                 0.50       100      4420.312  7.507904e-04
##   0.3  2          1                 0.50       200      4449.284  4.327419e-04
##   0.3  2          1                 0.50       500      4523.502  5.054715e-04
##   0.3  2          1                 0.75       100      4414.731  6.745753e-04
##   0.3  2          1                 0.75       200      4449.996  1.594474e-04
##   0.3  2          1                 0.75       500      4496.795  2.553240e-04
##   0.3  2          1                 1.00       100      4401.374  8.442726e-04
##   0.3  2          1                 1.00       200      4429.374  4.302801e-04
##   0.3  2          1                 1.00       500      4491.849  3.107001e-04
##   0.3  2          2                 0.50       100      4421.788  1.235219e-03
##   0.3  2          2                 0.50       200      4462.735  7.026833e-04
##   0.3  2          2                 0.50       500      4530.553  3.228927e-04
##   0.3  2          2                 0.75       100      4408.724  5.771339e-04
##   0.3  2          2                 0.75       200      4446.804  4.099086e-04
##   0.3  2          2                 0.75       500      4501.857  3.258674e-04
##   0.3  2          2                 1.00       100      4398.861  1.035941e-03
##   0.3  2          2                 1.00       200      4431.299  3.181583e-04
##   0.3  2          2                 1.00       500      4494.122  2.781871e-04
##   0.3  2          3                 0.50       100      4424.252  6.488797e-04
##   0.3  2          3                 0.50       200      4461.548  4.510856e-04
##   0.3  2          3                 0.50       500      4527.157  4.065127e-04
##   0.3  2          3                 0.75       100      4412.775  8.607148e-04
##   0.3  2          3                 0.75       200      4449.767  2.354200e-04
##   0.3  2          3                 0.75       500      4493.816  4.247253e-04
##   0.3  2          3                 1.00       100      4404.264  5.753331e-04
##   0.3  2          3                 1.00       200      4431.015  3.972907e-04
##   0.3  2          3                 1.00       500      4493.533  4.050974e-04
##   0.3  4          1                 0.50       100      4594.183  2.849204e-04
##   0.3  4          1                 0.50       200      4725.111  3.925840e-04
##   0.3  4          1                 0.50       500      4939.961  6.970453e-04
##   0.3  4          1                 0.75       100      4546.470  2.329073e-04
##   0.3  4          1                 0.75       200      4645.785  4.063817e-04
##   0.3  4          1                 0.75       500      4846.341  8.701386e-04
##   0.3  4          1                 1.00       100      4523.557  5.586803e-05
##   0.3  4          1                 1.00       200      4614.551  1.160870e-04
##   0.3  4          1                 1.00       500      4808.964  5.477077e-04
##   0.3  4          2                 0.50       100      4586.234  6.555203e-04
##   0.3  4          2                 0.50       200      4706.838  3.656184e-04
##   0.3  4          2                 0.50       500      4914.131  5.243015e-04
##   0.3  4          2                 0.75       100      4553.321  1.645278e-04
##   0.3  4          2                 0.75       200      4661.215  5.210704e-04
##   0.3  4          2                 0.75       500      4836.860  5.789504e-04
##   0.3  4          2                 1.00       100      4502.259  3.437701e-04
##   0.3  4          2                 1.00       200      4585.275  2.458155e-04
##   0.3  4          2                 1.00       500      4756.228  3.993481e-04
##   0.3  4          3                 0.50       100      4567.754  2.471932e-04
##   0.3  4          3                 0.50       200      4676.887  2.942752e-04
##   0.3  4          3                 0.50       500      4882.812  1.077516e-04
##   0.3  4          3                 0.75       100      4542.825  2.615360e-04
##   0.3  4          3                 0.75       200      4649.902  3.245262e-04
##   0.3  4          3                 0.75       500      4826.911  2.100587e-04
##   0.3  4          3                 1.00       100      4509.042  9.428845e-05
##   0.3  4          3                 1.00       200      4599.920  9.074876e-05
##   0.3  4          3                 1.00       500      4771.927  2.940682e-04
##   0.3  6          1                 0.50       100      4825.672  1.031123e-03
##   0.3  6          1                 0.50       200      5002.025  1.170793e-03
##   0.3  6          1                 0.50       500      5299.008  8.513617e-04
##   0.3  6          1                 0.75       100      4755.559  4.934681e-04
##   0.3  6          1                 0.75       200      4981.072  8.367567e-04
##   0.3  6          1                 0.75       500      5269.750  7.707018e-04
##   0.3  6          1                 1.00       100      4692.462  4.604037e-04
##   0.3  6          1                 1.00       200      4829.040  6.999263e-04
##   0.3  6          1                 1.00       500      5101.315  8.059833e-04
##   0.3  6          2                 0.50       100      4777.483  6.151001e-04
##   0.3  6          2                 0.50       200      4994.914  7.323964e-04
##   0.3  6          2                 0.50       500      5345.957  8.225558e-04
##   0.3  6          2                 0.75       100      4734.464  2.061251e-04
##   0.3  6          2                 0.75       200      4896.000  5.995936e-04
##   0.3  6          2                 0.75       500      5220.505  9.170559e-04
##   0.3  6          2                 1.00       100      4628.730  5.784965e-04
##   0.3  6          2                 1.00       200      4770.372  7.597828e-04
##   0.3  6          2                 1.00       500      5077.325  5.198482e-04
##   0.3  6          3                 0.50       100      4757.996  2.809929e-04
##   0.3  6          3                 0.50       200      4923.695  3.958095e-04
##   0.3  6          3                 0.50       500      5202.290  2.510423e-04
##   0.3  6          3                 0.75       100      4704.357  5.249167e-04
##   0.3  6          3                 0.75       200      4904.585  1.024855e-03
##   0.3  6          3                 0.75       500      5191.722  9.855303e-04
##   0.3  6          3                 1.00       100      4650.835  5.913761e-04
##   0.3  6          3                 1.00       200      4790.149  6.966569e-04
##   0.3  6          3                 1.00       500      5059.999  1.011286e-03
##   MAE     
##   2177.710
##   2186.892
##   2214.893
##   2172.917
##   2187.457
##   2208.752
##   2177.636
##   2186.095
##   2209.359
##   2186.028
##   2195.112
##   2227.792
##   2179.317
##   2193.497
##   2209.908
##   2176.533
##   2185.233
##   2206.344
##   2186.554
##   2197.160
##   2219.921
##   2178.381
##   2190.698
##   2218.415
##   2178.130
##   2185.081
##   2207.803
##   2211.388
##   2253.764
##   2345.381
##   2206.251
##   2243.853
##   2316.610
##   2201.948
##   2231.319
##   2296.525
##   2212.589
##   2243.662
##   2344.833
##   2206.096
##   2240.395
##   2313.472
##   2202.908
##   2230.158
##   2301.975
##   2210.852
##   2243.260
##   2332.207
##   2200.668
##   2232.792
##   2311.119
##   2200.495
##   2226.027
##   2293.897
##   2264.589
##   2334.178
##   2533.462
##   2250.298
##   2332.876
##   2496.047
##   2243.802
##   2300.286
##   2434.258
##   2254.397
##   2333.468
##   2511.398
##   2245.467
##   2318.057
##   2480.183
##   2246.540
##   2300.023
##   2443.325
##   2261.407
##   2333.823
##   2504.986
##   2248.272
##   2309.356
##   2478.656
##   2236.023
##   2288.605
##   2425.703
##   2196.327
##   2217.746
##   2249.614
##   2194.561
##   2209.330
##   2243.851
##   2188.246
##   2203.277
##   2240.277
##   2188.607
##   2212.183
##   2249.969
##   2192.882
##   2210.665
##   2244.638
##   2185.616
##   2201.599
##   2236.845
##   2198.213
##   2210.805
##   2262.783
##   2188.193
##   2201.925
##   2245.888
##   2185.716
##   2201.367
##   2236.490
##   2264.260
##   2349.431
##   2507.453
##   2256.691
##   2327.071
##   2442.544
##   2242.911
##   2291.146
##   2398.218
##   2276.686
##   2357.121
##   2504.382
##   2236.437
##   2303.607
##   2420.030
##   2228.917
##   2286.473
##   2400.658
##   2249.545
##   2340.464
##   2502.995
##   2242.675
##   2309.028
##   2444.839
##   2226.785
##   2272.997
##   2394.436
##   2399.939
##   2563.187
##   2828.425
##   2341.093
##   2476.202
##   2721.778
##   2310.582
##   2425.512
##   2600.784
##   2415.391
##   2553.430
##   2809.659
##   2347.734
##   2481.174
##   2723.621
##   2317.245
##   2414.941
##   2615.955
##   2400.581
##   2531.603
##   2806.153
##   2346.793
##   2483.126
##   2725.627
##   2307.660
##   2414.139
##   2618.543
##   2217.515
##   2231.665
##   2304.542
##   2211.205
##   2231.782
##   2278.402
##   2197.427
##   2215.870
##   2262.932
##   2212.896
##   2253.668
##   2315.415
##   2201.240
##   2233.624
##   2283.051
##   2190.492
##   2214.183
##   2262.162
##   2209.201
##   2239.291
##   2303.683
##   2206.116
##   2227.084
##   2279.271
##   2197.350
##   2213.850
##   2263.335
##   2341.683
##   2461.204
##   2648.679
##   2283.113
##   2367.065
##   2538.270
##   2280.051
##   2351.834
##   2501.905
##   2339.494
##   2460.164
##   2655.368
##   2306.831
##   2394.060
##   2563.195
##   2261.193
##   2329.909
##   2484.861
##   2335.888
##   2434.575
##   2662.725
##   2309.185
##   2390.568
##   2562.258
##   2265.443
##   2339.746
##   2490.882
##   2557.255
##   2743.071
##   3038.329
##   2461.332
##   2653.736
##   2929.607
##   2401.180
##   2507.544
##   2738.510
##   2542.425
##   2749.475
##   3087.739
##   2460.244
##   2620.079
##   2928.100
##   2377.194
##   2494.497
##   2755.527
##   2511.983
##   2719.466
##   3006.017
##   2447.853
##   2639.646
##   2910.471
##   2387.957
##   2515.237
##   2760.100
## 
## Tuning parameter 'gamma' was held constant at a value of 0
## Tuning
##  parameter 'colsample_bytree' was held constant at a value of 0.4
## RMSE was used to select the optimal model using the smallest value.
## The final values used for the model were nrounds = 100, max_depth = 2, eta
##  = 0.1, gamma = 0, colsample_bytree = 0.4, min_child_weight = 1 and subsample
##  = 1.

###XGBoost after tunning We found that this combination of hyper-parameters will give us best fit max_depth = 2, eta = 0.1, gamma = 0, min_child_weight = 3, colsample_bytree = 0.4, subsample = 1, objective = “reg:squarederror”

xgb.model.best.tune <- xgb.train(data = dbTrain_xgb,
                       label = dbY,
                       nround = 100,
                       max_depth = 2,
                       eta = 0.1,
                       gamma = 0,
                       min_child_weight = 3,
                       colsample_bytree = 0.4,
                       subsample = 1,
                       objective = "reg:squarederror"
)
## [23:43:49] WARNING: amalgamation/../src/learner.cc:627: 
## Parameters: { "label" } might not be used.
## 
##   This could be a false alarm, with some parameters getting used by language bindings but
##   then being mistakenly passed down to XGBoost core, or some parameter actually being used
##   but getting flagged wrongly here. Please open an issue if you find any such cases.
xgb.pred2 <- predict(xgb.model.best.tune,dbTest_xgb)
rmse_xgb_tuned = caret::RMSE(test_data_xgb$claimValue, xgb.pred2)
importance.matrix <- xgb.importance(feature_names = xgb.model.best.tune$feature_names, model =xgb.model.best.tune)
xgb.plot.importance(importance_matrix = importance.matrix)

rmse_xgb_tuned
## [1] 4484.422

##RANDOM FOREST

##Data management
data_rf<-rbind.data.frame(data_train_final2,data_test_final2)
train.rf<-data_train_final2
test.rf<-data_test_final2

train.rf$gender<-as.factor(train.rf$gender)
train.rf$carType<-as.factor(train.rf$carType)
train.rf$Employ_situation<-as.factor(train.rf$Employ_situation)
train.rf$AgeGroup<-as.factor(train.rf$AgeGroup)
train.rf$material<-as.factor(train.rf$material)
train.rf$region<-as.factor(train.rf$region)


test.rf$gender<-as.factor(test.rf$gender)
test.rf$carType<-as.factor(test.rf$carType)
test.rf$Employ_situation<-as.factor(test.rf$Employ_situation)
test.rf$AgeGroup<-as.factor(test.rf$AgeGroup)
test.rf$material<-as.factor(test.rf$material)
test.rf$region<-as.factor(test.rf$region)

###Simple We Run a simple random forest

set.seed(1234)
library(Metrics)
## 
## Attachement du package : 'Metrics'
## L'objet suivant est masqué depuis 'package:pROC':
## 
##     auc
## Les objets suivants sont masqués depuis 'package:caret':
## 
##     precision, recall
## L'objet suivant est masqué depuis 'package:forecast':
## 
##     accuracy
rf.default<-randomForest(formula = claimValue~.,
                         data=train.rf,
                         method = "rf"
)
rf.default
## 
## Call:
##  randomForest(formula = claimValue ~ ., data = train.rf, method = "rf") 
##                Type of random forest: regression
##                      Number of trees: 500
## No. of variables tried at each split: 2
## 
##           Mean of squared residuals: 19870535
##                     % Var explained: -3.55
rf.default.pre1 <- predict(rf.default,test.rf)
rmse_rf_default<-rmse(rf.default.pre1,test.rf$claimValue)
rmse_rf_default
## [1] 4529.062

improve model

library(h2o)
## 
## ----------------------------------------------------------------------
## 
## Your next step is to start H2O:
##     > h2o.init()
## 
## For H2O package documentation, ask for help:
##     > ??h2o
## 
## After starting H2O, you can use the Web UI at http://localhost:54321
## For more information visit https://docs.h2o.ai
## 
## ----------------------------------------------------------------------
## 
## Attachement du package : 'h2o'
## L'objet suivant est masqué depuis 'package:pROC':
## 
##     var
## Les objets suivants sont masqués depuis 'package:data.table':
## 
##     hour, month, week, year
## Les objets suivants sont masqués depuis 'package:stats':
## 
##     cor, sd, var
## Les objets suivants sont masqués depuis 'package:base':
## 
##     %*%, %in%, &&, ||, apply, as.factor, as.numeric, colnames,
##     colnames<-, ifelse, is.character, is.factor, is.numeric, log,
##     log10, log1p, log2, round, signif, trunc
#h2o.shutdown(prompt = FALSE)

h2o.init()
## 
## H2O is not running yet, starting it now...
## 
## Note:  In case of errors look at the following log files:
##     C:\Users\Admin\AppData\Local\Temp\RtmpCChK78\file4350516655eb/h2o_Admin_started_from_r.out
##     C:\Users\Admin\AppData\Local\Temp\RtmpCChK78\file43506d4f177d/h2o_Admin_started_from_r.err
## 
## 
## Starting H2O JVM and connecting:  Connection successful!
## 
## R is connected to the H2O cluster: 
##     H2O cluster uptime:         4 seconds 716 milliseconds 
##     H2O cluster timezone:       Europe/Paris 
##     H2O data parsing timezone:  UTC 
##     H2O cluster version:        3.38.0.1 
##     H2O cluster version age:    3 months and 17 days !!! 
##     H2O cluster name:           H2O_started_from_R_Admin_gvy866 
##     H2O cluster total nodes:    1 
##     H2O cluster total memory:   1.74 GB 
##     H2O cluster total cores:    8 
##     H2O cluster allowed cores:  8 
##     H2O cluster healthy:        TRUE 
##     H2O Connection ip:          localhost 
##     H2O Connection port:        54321 
##     H2O Connection proxy:       NA 
##     H2O Internal Security:      FALSE 
##     R Version:                  R version 4.2.2 (2022-10-31 ucrt)
## Warning in h2o.clusterInfo(): 
## Your H2O cluster version is too old (3 months and 17 days)!
## Please download and install the latest version from http://h2o.ai/download/
train.h2o <- as.h2o(train.rf)
## 
  |                                                                            
  |                                                                      |   0%
  |                                                                            
  |======================================================================| 100%
y <- "claimValue"
x <- setdiff(names(train.rf), y)

# hyperparameter grid
hyper_grid.h2o <- list(
  ntrees      = seq(100, 300, by = 100),
  mtries      = seq(3, 6, by = 1),
  sample_rate = c(.55, .632, 0.75),
  max_depth = seq(10, 30, by = 10),
  min_rows = seq(1, 3, by = 1),
  nbins = seq(20, 30, by = 10)
)

# build grid search 
grid <- h2o.grid(
  algorithm = "randomForest",
  grid_id = "rf_grid",
  x = x, 
  y = y, 
  seed = 1234,
  nfolds =5,
  training_frame = train.h2o,
  hyper_params = hyper_grid.h2o,
  search_criteria = list(strategy = "Cartesian")
)
## 
  |                                                                            
  |                                                                      |   0%
  |                                                                            
  |======================================================================| 100%
## Warning in h2o.getGrid(grid_id = grid_id): Some models were not built due to a
## failure, for more details run `summary(grid_object, show_stack_traces = TRUE)`
# collect the results and sort by our model performance metric of choice
grid_perf <- h2o.getGrid(
  grid_id = "rf_grid", 
  sort_by = "residual_deviance", 
  decreasing = FALSE
)
## Warning in h2o.getGrid(grid_id = "rf_grid", sort_by = "residual_deviance", :
## Some models were not built due to a failure, for more details run
## `summary(grid_object, show_stack_traces = TRUE)`
grid_perf@summary_table
## Hyper-Parameter Search Summary: ordered by increasing residual_deviance
##   max_depth min_rows  mtries    nbins    ntrees sample_rate        model_ids
## 1  10.00000  3.00000 3.00000 20.00000 100.00000     0.55000  rf_grid_model_7
## 2  10.00000  2.00000 3.00000 20.00000 100.00000     0.55000  rf_grid_model_4
## 3  10.00000  3.00000 4.00000 20.00000 100.00000     0.55000 rf_grid_model_16
## 4  30.00000  3.00000 3.00000 20.00000 100.00000     0.55000  rf_grid_model_9
## 5  20.00000  3.00000 3.00000 20.00000 100.00000     0.55000  rf_grid_model_8
##   residual_deviance
## 1    19659187.42577
## 2    19787157.14055
## 3    19834685.82624
## 4    19942685.04045
## 5    19943250.67920
## 
## ---
##    max_depth min_rows  mtries    nbins    ntrees sample_rate        model_ids
## 18  10.00000  1.00000 6.00000 20.00000 100.00000     0.55000 rf_grid_model_28
## 19  20.00000  1.00000 3.00000 20.00000 100.00000     0.55000  rf_grid_model_2
## 20  30.00000  1.00000 3.00000 20.00000 100.00000     0.55000  rf_grid_model_3
## 21  20.00000  1.00000 4.00000 20.00000 100.00000     0.55000 rf_grid_model_11
## 22  30.00000  1.00000 4.00000 20.00000 100.00000     0.55000 rf_grid_model_12
## 23  20.00000  1.00000 5.00000 20.00000 100.00000     0.55000 rf_grid_model_20
##    residual_deviance
## 18    20722854.38533
## 19    21527174.62177
## 20    21533848.52169
## 21    22380314.07232
## 22    22385307.13729
## 23    22767241.52061

###Random forest with better hyperparameters with best rf model

#best_model1 <- h2o.getModel(grid_perf@model_ids[[1]])
rf.better<-randomForest(formula = claimValue~.,
                        max_depth = 20,
                        min_rows = 2,
                        nbin = 20,
                        ntrees      = 100,
                        mtries      = 5,
                        sample_rate     = 0.55,
                        data=train.rf,
                        method = "rf"
)

rf.pred2 <- predict(rf.better,test.rf)
#rf.better.pre2 <- predict(rf.better,test.rf)
#rsme_rf_tuned<-rmse(rf.better.pre2,test.rf$claimValue)

#4.COMPARISION ##GLM and RADOMFOREST and XGBOOST First, we do a cross-validation between GLM gamma and RF

library(cvTools)
## Le chargement a nécessité le package : robustbase
## 
## Attachement du package : 'robustbase'
## L'objet suivant est masqué depuis 'package:boot':
## 
##     salinity
## 
## Attachement du package : 'cvTools'
## L'objet suivant est masqué depuis 'package:Metrics':
## 
##     mape
set.seed(5)
# Generate some test data
k <- 10 #the number of folds
folds <- cvFolds(NROW(data_rf), K=k)
error_glm<-c()
error_rf<-c()

for(i in 1:k){
  train <- data_rf[folds$subsets[folds$which != i], ] #Set the training set
  validation <- data_rf[folds$subsets[folds$which == i], ] #Set the validation set
  newrf <- randomForest(data=train,
                        claimValue~.,
                        max_depth = 20,
                        min_rows = 2,
                        nbin = 20,
                        ntrees      = 100,
                        mtries      = 5,
                        sample_rate     = 0.55,
                        method = "rf"
)
  newglm_gamma<-glm(formula = claimValue ~ gender+
               carType+Employ_situation+AgeGroup+material+region+cityDensity
             ,data=train,  family = Gamma(link="log"))
#Get the predicitons for the validation set (from the model just fit on the train data)
    res_glm <- sqrt(mean((predict(newglm_gamma,newdata=validation)-validation$claimValue)^2))
    res_rf <- sqrt(mean((predict(newrf,newdata=validation)-validation$claimValue)^2))
    #print(error_glm)
    error_glm<-c(error_glm,res_glm)
    error_rf<-c( error_rf,res_rf)
}
#error_glm
#error_rf
#error_glm<-c(error_glm,res_glm)
# error_rf<-c( error_rf,res_rf)

Compare error of predicting between GLM gamma and RF

  error_pr_glm.rf<-cbind(error_glm,error_rf)
  error_pr_glm.rf<-as.data.frame(error_pr_glm.rf)
  colnames(error_pr_glm.rf) <- c("glm.gamma","randomforest")
library(plotly)
fig0 <- plot_ly(error_pr_glm.rf, type = 'box')
fig0 <- fig0 %>%   
  add_trace(y=~glm.gamma, name="gamma")%>%
  add_trace(y=~randomforest, name="randomforest")%>%
    layout(title = "Prediction Error",
         xaxis = list(title = "Model"),
         yaxis = list (title = "RMSE"))
fig0

We can see that Randomforest perform better that GLM Gamma

Since xgboost require changing character into number so we do a seperate cross validation. Because the data is big so the result of comparation between the 3 model can be accepted.

 #one hot encoding
set.seed(5)
ohe.features <- c("gender",
                  "carType",
                  "Employ_situation",
                  "AgeGroup",
                  "material",
                  "region",
                 "cityDensity")
ohe.string <- paste(" ~ ", paste(ohe.features, collapse=" + "), sep = "")
ohe.dummies <- dummyVars(ohe.string, data = data_rf[, ..ohe.features])

data.ohe1 <- predict(ohe.dummies, newdata = data_rf[, ..ohe.features]) %>% as.data.table
data.ohe1<- cbind.data.frame(data.ohe1,data_rf$claimValue)
names(data.ohe1)[ncol(data.ohe1)] <- "claimValue"
 #dataset$holdoutpred #do whatever you want with these predictions


library(plyr)
## ------------------------------------------------------------------------------
## You have loaded plyr after dplyr - this is likely to cause problems.
## If you need functions from both plyr and dplyr, please load plyr first, then dplyr:
## library(plyr); library(dplyr)
## ------------------------------------------------------------------------------
## 
## Attachement du package : 'plyr'
## Les objets suivants sont masqués depuis 'package:plotly':
## 
##     arrange, mutate, rename, summarise
## Les objets suivants sont masqués depuis 'package:dplyr':
## 
##     arrange, count, desc, failwith, id, mutate, rename, summarise,
##     summarize
## L'objet suivant est masqué depuis 'package:purrr':
## 
##     compact
nfold <- 10
folds <- createFolds(y =data.ohe1[,25],k=10)
error_xgb <- lapply(1:10, function(kk){
 ## Data management
    # Train
    train <- data.ohe1[which(1:nrow(data.ohe1) %in% folds[[kk]]),]
    dbX <- as(as.matrix(train[,-ncol(train)]),"dgCMatrix")
    dbY <- as.numeric(train$claimValue)
    dbTrain <- xgb.DMatrix(data = dbX, label = dbY)
 # Test
    test <- data.ohe1[which(1:nrow(data.ohe1) %in% folds[[kk]]),]
    dbX <- as(as.matrix(test[,-ncol(test)]),"dgCMatrix")
    dbY <- as.numeric(test$claimValue)
    dbTest <- xgb.DMatrix(data = dbX, label = dbY)
    xgb <- xgb.train(nround = 100,
                       max_depth = 2,
                       eta = 0.1,
                       gamma = 0,
                       min_child_weight = 3,
                       colsample_bytree = 0.4,
                       subsample = 0.5,
                       objective = "reg:squarederror",
                       verbose = FALSE, data = dbTrain
                     )
    
  res_xgb <- sqrt(mean((predict(xgb,dbTest)-dbY)^2))
  return(c(res_xgb))
 })
 error_xgb <- as.data.frame(do.call("rbind",error_xgb))

Compare error of predicting between 3 models

error_pr<-cbind(error_xgb,error_glm,error_rf)
error_pr<-as.data.frame(error_pr)
colnames(error_pr) <- c("xgb","glm.gamma","randomforest")

library(plotly)
fig <- plot_ly(error_pr, type = 'box')
fig <- fig %>%   
  add_trace(y=~xgb, name="xgboost")%>%
  add_trace(y=~glm.gamma, name="gamma")%>%
  add_trace(y=~randomforest, name="randomforest")%>%
    layout(title = "Prediction Error",
         xaxis = list(title = "Model"),
         yaxis = list (title = "RMSE"))
fig

From the figuer, we can see that random forest performance is the best of 2 model in the sense of the RMSE.

#5.PRICING So now we apply our model to calculate the prime pure. The model will take the data.test as input and return the prime value

#Data management
#gender + carType + Employ_situation + material + region + cityDensity + AgeGroup


#                  "gender",
#                 "carType",
#                "Employ_situation",
#               "AgeGroup",
#              "material",
#           "region",
#       "cityDensity"

#Data Management
testing0<-testing
testing0 <- testing0%>%
  mutate(AgeGroup = case_when(
    age >= 18 & age < 30 ~ 1,
    age >= 30 & age < 40 ~ 2,
    age >= 40 & age < 52 ~ 3,
    age >= 52 ~ 4
  ))
testing0<-data.table(testing0)
head(testing0[,Employ_situation:= as.factor(ifelse(occupation == "Employed"|occupation == "Self-employed","Working", "Jobless"))])
##    id gender carType carCategory    occupation age carGroup bonus carValue
## 1:  1   Male       C      Medium      Employed  38       16   -30    47095
## 2:  2 Female       C      Medium    Unemployed  20        8   -10     8720
## 3:  3 Female       B       Small     Housewife  21        8     0     8145
## 4:  4   Male       A       Large     Housewife  45       13   -50    19790
## 5:  5   Male       D       Small Self-employed  49       10   -50    18265
## 6:  6 Female       F       Small      Employed  34        8   -50     5475
##    material subRegion region cityDensity AgeGroup Employ_situation
## 1:        1       Q18      Q    211.8309        2          Working
## 2:        1        R5      R    258.9237        1          Jobless
## 3:        0       Q23      Q    205.4308        1          Jobless
## 4:        0       R20      R    290.1327        3          Jobless
## 5:        1       R14      R    275.0923        3          Working
## 6:        1       R29      R    291.3195        2          Working
##ESTIMATE P
p<-predict(rf.fit, testing0, type = "prob")
for(i in 1:length(p)){
  if(p[i] == 0){
    p[i] = 0.001
  }
}
##Estimate E[X|X,Y>0]

testing.final<-testing0[,c(2,3,15,14,10,12,13)]


testing.final$material<-as.factor(testing.final$material)
ohe.features <- c("gender",
                  "carType",
                  "Employ_situation",
                  "AgeGroup",
                  "material",
                  "region",
                 "cityDensity")
ohe.string <- paste(" ~ ", paste(ohe.features, collapse=" + "), sep = "")
ohe.dummies <- dummyVars(ohe.string, data = data_rf[, ..ohe.features])

data.ohe_final <- predict(ohe.dummies, newdata = testing.final[, ..ohe.features]) %>% as.data.table

db_pricing <- as(as.matrix(data.ohe_final),"dgCMatrix")
E_predicted<-predict(xgb.model.best.tune,db_pricing)

prime_pure<-p*E_predicted
x<-c()
x<-cbind.data.frame(p,E_predicted,prime_pure)
colnames(x) <- c("P(Y<0)", "P(Y>0)", "E[Y|X,Y>0]","?", "Prime pure")

View(x)
final_product<-cbind.data.frame(testing,x$`P(Y>0)`,x$`E[Y|X,Y>0]`,x$`Prime pure`)
colnames(final_product)[c(14,15,16)] <- c("P(Y>0)", "E[Y|X,Y>0]", "Prime pure")

final_product_of_project<-final_product[,c(1,ncol(final_product))]

library("writexl")
write_xlsx(final_product,"D://ISFA//M2//Data Science//Prime_pure_final1.xlsx")

write.csv2(final_product_of_project,file = "D://ISFA//M2//Data Science//premium_n.csv",sep = ",",append = TRUE)
## Warning in write.csv2(final_product_of_project, file = "D://ISFA//M2//Data
## Science//premium_n.csv", : une tentative de modification de 'append' a échoué
## Warning in write.csv2(final_product_of_project, file = "D://ISFA//M2//Data
## Science//premium_n.csv", : une tentative de modification de 'sep' a échoué